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LM337KTER Scheda tecnica(PDF) 3 Page - Texas Instruments

Il numero della parte LM337KTER
Spiegazioni elettronici  3-TERMINAL ADJUSTABLE REGULATORS
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LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of operating virtual junction temperature
(unless otherwise noted)
PARAMETER
TEST CONDITIONS†
LM237
LM337
UNIT
PARAMETER
TEST CONDITIONS†
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
Input regulation‡
VI – VO = –3 V to –40 V
TJ = 25°C
0.01
0.02
0.01
0.04
%/V
Input regulation‡
VI – VO = –3 V to –40 V
TJ = MIN to MAX
0.02
0.05
0.02
0.07
%/V
Ripple rejection
VO = –10 V,
f = 120 HZ
60
60
dB
Ripple rejection
VO = –10 V,
f = 120 HZ,
CADJ = 10 µF
66
77
66
77
dB
Output regulation
IO = 10 mA to 1.5 A,
|VO| ≤ 5 V
25
50
mV
Output regulation
IO = 10 mA to 1.5 A,
TJ = 25°C
|VO| ≥ 5 V
0.3%
0.5%
0.3%
1%
Output regulation
IO = 10 mA to 1.5 A
|VO| ≤ 5 V
50
70
mV
IO = 10 mA to 1.5 A
|VO| ≥ 5 V
1%
1.5%
Output-voltage
change with
temperature
TJ = MIN to MAX
0.6%
0.6%
Output-voltage
long-term drift
After 1000 h at TJ = MAX and VI – VO = –40 V
0.3%
1%
0.3%
1%
Output noise
voltage
f = 10 HZ to 10 kHZ,
TJ = 25°C
0.003%
0.003%
Minimum output
current to maintain
|VI – VO| ≤ 40 V
2.5
5
2.5
10
mA
current to maintain
regulation
|VI – VO| ≤ 10 V
1.2
3
1.5
6
mA
Peak output current
|VI – VO| ≤ 15 V
1.5
2.2
1.5
2.2
A
Peak output current
|VI – VO| ≤ 40 V,
TJ = 25°C
0.24
0.4
0.15
0.4
A
Adjustment-terminal
current
65
100
65
100
µA
Change in
adjustment-terminal
current
VI – VO = – 2.5 V to –40 V,
IO = 10 mA to MAX
TJ = 25°C,
2
5
2
5
µA
Reference voltage
VI – VO = – 3 V to –40 V,
IO = 10 mA to 1.5 A,
TJ = 25°C
–1.225
–1.25
–1.275
–1.213
–1.25
–1.287
V
Reference voltage
(output to ADJ)
IO = 10 mA to 1.5 A,
P
≤ rated dissipation
TJ = MIN to MAX
–1.2
–1.25
–1.3
–1.2
–1.25
–1.3
V
Thermal regulation
Initial TJ = 25°C,
10-ms pulse
0.002
0.02
0.003
0.04
%/W
† Unless otherwise noted, these specifications apply for the following test conditions |VI – VO| = 5 V and IO = 0.5 A. For conditions shown as MIN
or MAX, use the appropriate value specified under recommended operating conditions. All characteristics are measured with a 0.1-
µF capacitor
across the input and a 1-
µF capacitor across the output. Pulse-testing techniques are used to maintain the junction temperature as close to the
ambient temperature as possible. Thermal effects must be taken into account separately.
‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.


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